gitlab: allow overriding name of the upstream repository

The CI rules have special logic for what happens in upstream. To enable
contributors who modify CI rules to test this logic, however, they need
to be able to override which repo is considered upstream. This
introduces the 'QEMU_CI_UPSTREAM' variable

  git push gitlab <branch> -o ci.variable=QEMU_CI_UPSTREAM=berrange

to make it look as if my namespace is the actual upstream. Namespace in
this context refers to the path fragment in gitlab URLs that is above
the repository. Typically this will be the contributor's gitlab login
name.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230608164018.2520330-3-berrange@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

1 files changed, 12 insertions, 7 deletions

diff --git a/.gitlab-ci.d/base.yml b/.gitlab-ci.d/base.yml
index fba9d31..a1d7342 100644
--- a/.gitlab-ci.d/base.yml
+++ b/.gitlab-ci.d/base.yml
@@ -5,6 +5,11 @@ variables:
   # for different branches in contributor forks.
   QEMU_CI_CONTAINER_TAG: latest
 
+  # For purposes of CI rules, upstream is the gitlab.com/qemu-project
+  # namespace. When testing CI, it might be usefult to override this
+  # to point to a fork repo
+  QEMU_CI_UPSTREAM: qemu-project
+
 # The order of rules defined here is critically important.
 # They are evaluated in order and first match wins.
 #
@@ -30,23 +35,23 @@ variables:
       when: never
 
     # Publishing jobs should only run on the default branch in upstream
-    - if: '$QEMU_JOB_PUBLISH == "1" && $CI_PROJECT_NAMESPACE == "qemu-project" && $CI_COMMIT_BRANCH != $CI_DEFAULT_BRANCH'
+    - if: '$QEMU_JOB_PUBLISH == "1" && $CI_PROJECT_NAMESPACE == $QEMU_CI_UPSTREAM && $CI_COMMIT_BRANCH != $CI_DEFAULT_BRANCH'
       when: never
 
     # Non-publishing jobs should only run on staging branches in upstream
-    - if: '$QEMU_JOB_PUBLISH != "1" && $CI_PROJECT_NAMESPACE == "qemu-project" && $CI_COMMIT_BRANCH !~ /staging/'
+    - if: '$QEMU_JOB_PUBLISH != "1" && $CI_PROJECT_NAMESPACE == $QEMU_CI_UPSTREAM && $CI_COMMIT_BRANCH !~ /staging/'
       when: never
 
     # Jobs only intended for forks should always be skipped on upstream
-    - if: '$QEMU_JOB_ONLY_FORKS == "1" && $CI_PROJECT_NAMESPACE == "qemu-project"'
+    - if: '$QEMU_JOB_ONLY_FORKS == "1" && $CI_PROJECT_NAMESPACE == $QEMU_CI_UPSTREAM'
       when: never
 
     # Forks don't get pipelines unless QEMU_CI=1 or QEMU_CI=2 is set
-    - if: '$QEMU_CI != "1" && $QEMU_CI != "2" && $CI_PROJECT_NAMESPACE != "qemu-project"'
+    - if: '$QEMU_CI != "1" && $QEMU_CI != "2" && $CI_PROJECT_NAMESPACE != $QEMU_CI_UPSTREAM'
       when: never
 
     # Avocado jobs don't run in forks unless $QEMU_CI_AVOCADO_TESTING is set
-    - if: '$QEMU_JOB_AVOCADO && $QEMU_CI_AVOCADO_TESTING != "1" && $CI_PROJECT_NAMESPACE != "qemu-project"'
+    - if: '$QEMU_JOB_AVOCADO && $QEMU_CI_AVOCADO_TESTING != "1" && $CI_PROJECT_NAMESPACE != $QEMU_CI_UPSTREAM'
       when: never
 
 
@@ -66,7 +71,7 @@ variables:
       allow_failure: true
 
     # Avocado jobs can be manually start in forks if $QEMU_CI_AVOCADO_TESTING is unset
-    - if: '$QEMU_JOB_AVOCADO && $CI_PROJECT_NAMESPACE != "qemu-project"'
+    - if: '$QEMU_JOB_AVOCADO && $CI_PROJECT_NAMESPACE != $QEMU_CI_UPSTREAM'
       when: manual
       allow_failure: true
 
@@ -78,7 +83,7 @@ variables:
 
     # Forks pipeline jobs don't start automatically unless
     # QEMU_CI=2 is set
-    - if: '$QEMU_CI != "2" && $CI_PROJECT_NAMESPACE != "qemu-project"'
+    - if: '$QEMU_CI != "2" && $CI_PROJECT_NAMESPACE != $QEMU_CI_UPSTREAM'
       when: manual
 
     # Jobs can run if any jobs they depend on were successful